How Acupuncture Works for Pain

A new study funded by the Army and the National Institutes of Health helps explain how acupuncture eases chronic pain. Using brain imaging, the study showed that acupuncture increases the availability of receptors in the brain that process and weaken pain signals. Moreover, acupuncture treatments – in this case twice a week for four weeks – affect both the brain’s short- and long-term ability to reduce pain sensation.